Consumption calculate feature.

README.md

@@ -18,18 +18,5 @@ This webapp is for smartphone's web browser.
 ## Restore from heroku
 
 ```shell-session
-pg_restore e538a47b-9b70-4e8d-9844-2d6706bd3330 --clean --no-acl --no-owner -d sharecar -h 127.0.0.1 -U sharecar
+./pull_db.sh
 ```
-
-## Start Aggregation
-
-```ruby
-Car.all.each do |car|
-  Consumption.create(
-    car: car,
-    start_at: Time.zone.local(2017, 7, 1, 0, 0, 0),
-    end_at: Time.zone.local(2017, 9, 30, 23, 59, 59),
-    price: 0
-  )
-end
-```

app/assets/javascripts/admin/consumptions.coffee

@@ -0,0 +1,3 @@
+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://coffeescript.org/

app/assets/stylesheets/admin/consumptions.scss

@@ -0,0 +1,3 @@
+// Place all the styles related to the admin::consumptions controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/

app/controllers/admin/consumptions_controller.rb

@@ -0,0 +1,50 @@
+class Admin::ConsumptionsController < ApplicationController
+  before_action :should_be_admin
+
+  def index
+    @consumptions = Consumption.all
+  end
+
+  def recalculate
+    begin
+      Consumption.transaction do
+        Consumption.where(id: params[:ids]).each(&:recalculate)
+      end
+
+      redirect_to action: :index
+    rescue
+      flash[:recalculate_error] = true
+
+      redirect_to action: :index
+    end
+  end
+
+  def new
+  end
+
+  def create
+    start_at = Time.zone.parse(params[:start_date])
+    end_at = Time.zone.parse(params[:end_date]).change(hour: 23, min: 59, sec: 59)
+
+    Consumption.transaction do
+      Car.all.select do |car|
+          car.fuels.in(start_at, end_at).exists?
+      end.each do |car|
+        Consumption.create(
+          car: car,
+          start_at: start_at,
+          end_at: end_at,
+          price: 0
+        )
+      end
+    end
+
+    redirect_to action: :index
+  end
+
+  def destroy_multiple
+    Consumption.where(id: params[:ids]).destroy_all
+
+    redirect_to action: :index
+  end
+end

app/helpers/admin/consumptions_helper.rb

@@ -0,0 +1,2 @@
+module Admin::ConsumptionsHelper
+end

app/models/consumption.rb

@@ -5,16 +5,20 @@ def self.unfinished
     where(finished: false)
   end
 
-  def self.calc_consumption(target_fuels, target_drives)
-    target_fuels.sum(&:amount) / target_drives.sum(&:distance).to_f
-  end
-
   def calc_fee_of(user)
     drives = target_drives_of(user)
     total_distance = drives.sum(&:distance)
     total_distance * price
   end
 
+  def recalculate
+    target_fuels = car.fuels.in(start_at, end_at)
+    target_drives = car.drives.in(start_at, end_at)
+
+    new_price = target_fuels.sum(&:amount) / target_drives.sum(&:distance).to_f
+    self.update(price: new_price)
+  end
+
   private
   def target_drives_of(user)
     user.drives.where(car_id: car_id).in(start_at, end_at)

app/models/drive.rb

@@ -15,6 +15,8 @@ def lacking?
   def distance
     if !end_meter.nil? && !start_meter.nil?
       end_meter - start_meter
+    else
+      raise "Can't calculate distance"
     end
   end
 
@@ -71,7 +73,7 @@ def distance
     if start_meter.present? && end_meter.present?
       end_meter - start_meter
     else
-      nil
+      raise "Can't calculate distance of the drive #{self.id}"
     end
   end
 

app/views/admin/consumptions/index.html.erb

@@ -0,0 +1,46 @@
+<div class="row">
+  <% if flash[:recalculate_error] %>
+    <div class="col s12">
+      <div class='card-panel red lighten-2' style='text-align: center;'>
+        <span class='white-text'>
+          燃費の算出に失敗しました。期間中の乗車記録に不備があります。
+        </span>
+      </div>
+    </div>
+  <% end %>
+  <%= link_to new_admin_consumption_path, method: :GET do %>
+    <div class="col s12">
+      <div class='card-panel blue lighten-2' style='text-align: center; font-size: large;'>
+        <span class='white-text'>
+          集計期間を登録する
+        </span>
+      </div>
+    </div>
+  <% end %>
+  <% @consumptions.group_by { |c| [c.start_at.to_date, c.end_at.to_date] }.sort.reverse.each do |dates, consumptions| %>
+    <div class="col s12">
+      <div class="Card">
+        <div class="Card--Content">
+          <p class="Card--Content--Title">
+            <%= dates[0] %> 〜 <%= dates[1] %>
+          </p>
+          <p style='text-align: right;'>
+            <ul>
+              <% consumptions.each do |consumption| %>
+                <li><%= consumption.car.name %>：<%= consumption.price.round(1) %> 円/km</li>
+              <% end %>
+            </ul>
+          </p>
+          <div class="Card--Action">
+            <%= link_to recalculate_admin_consumptions_path(ids: consumptions.map(&:id)), method: :POST, class: 'Card--Action--FAB green' do %>
+              <i class='Card--Action--FAB--Icon'>autorenew</i>
+            <% end %>
+            <%= link_to destroy_multiple_admin_consumptions_path(ids: consumptions.map(&:id)), method: :DELETE, class: 'Card--Action--FAB red' do %>
+              <i class='Card--Action--FAB--Icon'>delete</i>
+            <% end %>
+          </div>
+        </div>
+      </div>
+    </div>
+  <% end %>
+</div>

app/views/admin/consumptions/new.html.erb

@@ -0,0 +1,18 @@
+<div class="Card">
+  <div class="Card--Content">
+    <span class="Card--Content--Title">集計期間の登録</span>
+    <%= form_tag admin_consumptions_path, html: { class: 'Form' } do |f| %>
+      <div class='Form--InputSet--Field s6'>
+        <%= label_tag '開始日' %>
+        <%= date_field_tag :start_date, class: 'datepicker' %>
+      </div>
+
+      <div class='Form--InputSet--Field s6'>
+        <%= label_tag '終了日' %>
+        <%= date_field_tag :end_date, class: 'datepicker' %>
+      </div>
+
+      <%= submit_tag "登録", class: "Form--SubmitBtn" %>
+    <% end %>
+  </div>
+</div>

app/views/layouts/application.html.erb

@@ -29,6 +29,11 @@
                 <i class="material-icons">supervisor_account</i> 管理者画面
               <% end %>
             </li>
+            <li>
+              <%= link_to admin_consumptions_path do %>
+                <i class="material-icons">attach_money</i> 燃費計算
+              <% end %>
+            </li>
             <li>
               <%= link_to new_admin_payment_path do %>
                 <i class="material-icons">payment</i> 支払い記録

config/routes.rb

@@ -23,6 +23,12 @@
   end
 
   namespace :admin do
+    resources :consumptions, only: [:index, :new, :create] do
+      collection do
+        post :recalculate
+        delete :destroy_multiple
+      end
+    end
     resources :payments
     resources :cars, only: [:index, :edit, :update] do
       resources :drives

test/controllers/admin/consumptions_controller_test.rb

@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class Admin::ConsumptionsControllerTest < ActionDispatch::IntegrationTest
+  # test "the truth" do
+  #   assert true
+  # end
+end